Excellent
Excellent, trust-worthy security service.
By McHone R.
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Great
39 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Sentry Security specializes in the installation, service and monitoring of security services. As Chicago’s single-source solution for security needs, Sentry offers the most comprehensive range of services to deliver customized protection solutions and ease-of-use convenience. And, as Chicago’s leading independent security company, we have the local resources necessary to give you peace of mind- confirmed by the consistent high ratings from our customers.
Sentry Security (sentrysecurity.com) has 39 customer reviews on The Fair Hearing, with an average rating of 4.3 out of 5.
Showing 28 reviews with 5 stars · Clear filters
Excellent, trust-worthy security service.
By McHone R.
Don did an excellent job upgrading the system.
By Szalay R.
Very professional. Very diligent until the job is done
By Ray K.
Nice, helpful, respectful of your time via the service window--great customer service by phone to troubleshoot and assist. No nonsense and no BS. What more could you want?
By Joanne B.
The gentleman from Sentry was indeed a gentleman, was prompt, knew what he was doing, and did the work very quickly and very well. He also took the time to show me how to do certain aspects of it myself, should the need arise on a different entry spot in the future. We have depended on Sentry for decades and have neve been disappointed.
By Weissman/Hanscom R.
The people we have dealt with have been extremely helpful and friendly. Customer service has been patient and kind as we learned the system, asked tons of questions and initiated standards to insure easy, yet safe, access to our building for guests, staff and volunteers. Service has been consistent in following up on issues and doing whatever they can to address them and helping us to understand the significance of issues. They know what they're doing and are good at doing it!
By Parkview Community C.
Great service but maintenance monitoring is pricy and on the higher end in competitive comparisons.
By Robert
They did a great job with more features at a lower price. All is working well.
By Hoffman R.